[xmachineheadx]

Instead of doing a 5 speed gear conversion, can you do a 6 speed transmission conversion from another VW?

 

[Vent5]

It'll fit but the gearing is all wrong. With a high torque powerband like the TDI has, there's not much benefit to a 6 speed. What you're thinking of is like a double overdrive, most 6 speeds are single overdrive. A 6 speed is best for a performance engine with low torque. It can give better mileage but putting a gasoline engine from another VW won't do that.

 

[McJamma]

Sure, buy the new 2009 Jetta, it comes with a 6 speed conversion from the factory

 

[xmachineheadx]

Lol, sure, that's what I thought, thanks!

 

[iansw]

With the DSG, shifts are so fast that I would think performance could be better, depending on the setup.